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autocorrelation for circular variables?
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Mark Zarella
Dec 25, 2003, 10:24:35 AM12/25/03
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Suppose I have angular data. How do I perform an autocorrelation on this
data taking into account the fact that 359 degrees, for example, is more
closely correlated to 0 degrees than would be revealed in a typical linear
correlation function? Would it be valid to replace products with dot
products in the integral? Any ideas or references would be greatly
appreciated.
data taking into account the fact that 359 degrees, for example, is more
closely correlated to 0 degrees than would be revealed in a typical linear
correlation function? Would it be valid to replace products with dot
products in the integral? Any ideas or references would be greatly
appreciated.
Colin Andrew Percival
Dec 25, 2003, 11:21:11 AM12/25/03
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In sci.stat.math Mark Zarella <zare...@twcnyremove.rr.comspam> wrote:
> Suppose I have angular data. How do I perform an autocorrelation on this
> data taking into account the fact that 359 degrees, for example, is more
> closely correlated to 0 degrees than would be revealed in a typical linear
> correlation function?
> Suppose I have angular data. How do I perform an autocorrelation on this
> data taking into account the fact that 359 degrees, for example, is more
> closely correlated to 0 degrees than would be revealed in a typical linear
> correlation function?
Map x -> exp(i x) before computing the autocorrelation.
Colin Percival
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